Method of Selecting the Stratagems to Achieve Benchmarking Plant Efficiency Level Efficiently (Proposing AREA Theory which Indicates Achievement Ratio Evalution of the Effected Theoretical Area, and Adopt It for Analyzing Effectiveness of Improvement of the Plant Using DEA Methodology)

In this paper, a Method of Selecting the Stratagems to Achieve Benchmarking Plant Efficiency Level Efficiently is presented. We propose AREA Theory which indicates Achievement Ratio Evaluation of the effected theoretical Area. It is proposed officially for the first time, based on the principle that improving the efficiency level in a shorter period contributes higher profitability. DEA Methodology is used to indicate Production Control Efficiency level of the Plant, and Benchmarking level is recognized as DEA equal to 1. The methodology to prioritize factors of the improvement to allocate limited resource is proposed as Weighted-Preferential Efficient Ratio. Then AREA Theory is adapted for Analyzing Effectiveness of the Improvement of the Plant. We demonstrate a Method of Selecting the Stratagems through the practical data of the plant which contains 8 major production control factors of the improvement.